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CHAPTER ni THE NATURE OF THE EXPERIMENTS
MATERIAL AND METHOD
4 other sections not shown
adrenal gland weight adrenal weight Analysis angle animals behaviour birth body length body weight cages catch-up cephalometric x-rays changes chapter compared comparison correlation cranial base cranial capacity cranial vault cranium DATA LOCATION EXPERIMENT Days 23 dental difference at stage dimensions discussed effect environment environmental even-numbered rats experimental conditions experimental groups extremes of litter-size face factors figs film formalin genetic Graph Individuals growth pattern histological incisor Incr increments indicated influence investigation large litters large-litter rats lead acetate less longitudinal mandible maxilla mean values measurements method midsagittal plane molar segment morphogenesis normal observations occurred odd-numbered rats period plane of nutrition points possible post-conception present presphenoid previous experiment Quantity relationship relative seen shape showed a significant significant difference similar skull small litters small-litter rats smaller rats sphenoid bone stage 9 standard deviations Student's t-test synchondrosis third molars tissues width Wistar rats x-ray pictures